Home / 138,557.76-191,209.56-74,895.52

Finding the Fourth Proportional to 138,557.76, 191,209.56 and 74,895.52

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Solution

The fourth proportional to 138,557.76, 191,209.56 and 74,895.52 is: 103,355.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,557.76 : 191,209.56 = 74,895.52 : x
  2. Step 2: Convert to fraction form
    138,557.76/191,209.56 = 74,895.52/x
  3. Step 3: Cross multiply
    138,557.76x = 191,209.56 × 74,895.52
  4. Step 4: Simplify right side
    138,557.76x = 14,320,739,425.17
  5. Step 5: Solve for x
    x = 14,320,739,425.17/138,557.76
  6. Step 6: Final answer
    x = 103,355.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.